I actually really like that system to talk about rare pairing, it makes a lot of sense. I especially like 2. Uncertainty and surprisingness, I never thought of it that way, but yeah that's totally what reading most rare pairing fanfiction is like.

Aesthetics and Biopsychology huh? That's an interesting idea all on it's own. As a intellectual historian I'm not sure how I feel about this ::goes off to ponder concept::